Title :
The use of an active coded aperture for improved directional measurements in high energy γ-ray astronomy
Author :
Johansson, Andreas ; Beron, B.L. ; Campbell, L. ; Eichler, Roland ; Gorodetsky, P. ; Hofstadter, R. ; Hughes, E.B. ; Wilson, S.
Author_Institution :
High Energy Physics Laboratory and Department of Physics Stanford University Stanford, California 94305
Abstract :
The coded aperture, a refinement of the scatter-hole camera, offers a method for the improved measurement of γ-ray direction in γ-ray astronomy. Two prototype coded apertures have been built and tested. The more recent of these has 128 active elements of the heavy scintillator BGO. Results of tests for γ-rays in the range 50 - 500 MeV are reported and future application in space discussed.
Keywords :
Apertures; Astronomy; Collimators; Energy measurement; Energy resolution; Extraterrestrial measurements; Face detection; Laboratories; Steel; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1980.4330855
